1. For the following scores, find:
(a) The median
(b) The mode
(c) The mean(i) 9, 6, 5, 9, 3, 2 ,2, 1, 9
(ii) 201, 199, 200, 198, 201, 204, 196, 201
(iii) 20, 24, 24, 24, 40
(iv) 50.4, 30.9, 20.3, 20.1, 10.6, 5.3
2. 
A weekend golfer plays seven rounds of golf in a week. His scores are: 90, 105, 92, 99, 81, 82, 81 (a) Calculate the mean, median and mode of these seven scores. (b) Which of these averages would not be very representative of his week's golf?

3. A woman has a parttime job. Her weekly pay for 2 months' work was:
$212.50, $311.80, $410.70, $313.10, $204.50, $212.00, $409.20, $379.60
(a) What was her mean weekly pay?
(b) What was her median pay?
4. The table below shows the number of international visitors who visited a country over the past 5 years.
Find the mean number of visitors.
Year

Number of visitors

1995

1 343 003

1996

1 441 838

1997

1 551 341

1998

1 464 766

1999

1 517 324

5. The results from a class of students at a high school in mathematics and English are listed below.
a. Find the mean, median and mode of each set of results.
Mathematics 
56

45

89

34

94

21

45

65

69

34

12

23

59

65

30

56

45

58

76

89

English 
46

47

83

84

92

52

76

85

47

47

22

58

53

73

80

54

35

32

66

99

b. Comment on your results.
6. a. The mean of a set of amounts of money raised by 20 charity collectors is $1245. What was the total raised by the collectors.
b. The total amount of money taken in a car salesyard on a Saturday is $25,550. If 12 cars are sold, what is the mean amount each car was sold for.
c. A group of golfers each played a round of golf for a grand total of 836 shots. If the average round was 76, how many golfers played the round?